Slug-casting mold for typographical machines



' May 22, I928.

G. E. MARLATT SLUG CASTING MOLD FOR TYPOGRAPHICAL MACHINES Filed Nov. 15, 1926 Patented May 22, 1928.

rat

. enonen E. MARLATT, or rnsnnnnn, CALIFORNIA.

SING-CASTING MOLD ron- "rYPoeRArnIcAn Macnmns.

Application filed November 13, 1926'. Serial No. 148,305.

which may be quickly and accurately ad-v justed to selected points of thickness and ems or fractional ems of length without the liability. of the molten metal entering between the movable parts in the casting operation. A further and contributing object is to provide means whereby such a mold will be continuouslylubricated not only as to the movable parts but with regard to the casting slot in order that th'e slug may be readily ejected therefrom. In the accompanying 'drawings a Fig. 1 represents a'rotatable mold carrier having thereon two .molds differently adjusted both as to length and thickness, and two other .molds with portions omitted in order to show the construction of certain other portions. This view also shows a sys-' Fig. 7 shows a right-hand end-closing member which retains a constant position relative to the length of the mold slot but is adjustable according to the thickness thereof, hence corresponds in function to'the usu al right-hand mold liners of various thicknesses, but constant length. h

l/Vhen employed in connection with the usual rotatable carrier as in linotype machines, the conditions are such that the longitudinally-adjustable member of the mold must not extend beyond the edge of the disccarrier. Since this would be unavoidable if. a single mold were made adjustable from minimum to maximum of. established meas urements, I therefore provide four molds each having a limited length adjustment. But each of the four molds has the-full range of adjustment for slug thickness, therefore the fourmolds will provide for a-slug of any thickness or 'lengthwithin the usual limitations. In fact, inthe proportions illustrated, three molds will providethe usual range of adjustment, and the fourth may be a duplicate of one of the others or have an adjustment overlapping in range the maximum of one mold and minimum of another. EXceptfor the fact that the movable end-closing member I differs in length in the several molds, a description of any one mold will applyv to the others.

ing position and relative to the usual potmouth. when in casting position. 'The a square disc-center A is grooved as at A across eachcorner to receive projections B from the inner edge of an internal flange B,

and pins B serve to secure the two members A and B relatively integral and immovable.

To the flange B is secured a stiffening rim, Cwhich may have the usual gear teeth if the B in the web B andcontinuations O there-.

of in the rim C. The bars Dare secured in their grooves by means of screws-D and project fromthe face of thecarrier'as banking elements against which the mold adjusting members are stopped in selected positions. One of these adjusting members E serves to lock the mold cap G according to the lengthwise adjustment of the mold slot S, and for this purpose has teeth E cut in sion of a spring H.

cured by means of a pin H to a pro ection G from the mold cap G. The projection G enters a notch E in the locking member E,

hence the mold cap and locking nieinben therefor must move together longitudinally and be locked together in a selectedposition. The projection G is movable longitudinally and transversely in an opening B through the web 13, its transverse.movement being incident to the thickness adjustment of the mold slot.

The mold cap G is channeled (G to fit the carrier web B and is thus held laterally immovable when under lateral pressure dur-' ing the slug casting and ejectingoperations',

or at any other time. The front wall of the channeled mold cap is provided with a re cess G which embraces the front edge of the length-adjusting and end-closing member I; hence when the locking member E is raised out of engagement with the bar D against the resistance of the spring H and movedlongitudinally, the end-closing memher I moves with the mold cap a corresponding distanceand a length adjustment of the mold slot is accomplished. For this purpose the teeth D and E are preferably inch em) apart to conform to the usual length graduations for typographical lines. When the mold slot is adjusted longitudinally as above explained, itsthickness adjustment is not disturbed, the construction being such that the two adjustments must be independently made.

As means for adjusting the mold slot by points for thickness of slug, I provide the front wall of the mold cap with two groups of teeth G cut in opposing directions and stepped by points in inclined planes as shown. These teeth are engaged by a longitudinally movable thickness-adjusting member J which is banked against the bar D; In order to disengage the teeth J on the memberJ from the teeth G on the mold cap, it is necessary to first press the mold cap down against the resistance of the spring H ;the'member J is thus freed for longitudinal movement and thedirection of its move ment relative to the inclined teeth G will determine a corresponding increased or decreased'thickness for the mold cap and thus locks the member J in the selected position. Displacement of the member J in a forward direction is prevented by reason of a tongue J 2 thereon which enters a groove D in the bar D. l/Vhen the adjustment for thickness takes place the left-hand end-closing member I remains immovable by reason of the fact that its central portion 1 fills the space between the mold base A and the inner edge B of the web B, while its front edge I clears in the recess G of the mold cap. But the right-hand end-closing member K of the mold moves with the mold cap during the adjustment for thickness and to this end is provided with an undercut projection K j which hoo rs over the lip G of the mold cap and thus compels movement of the member K upwardly or downwardly with the mold cap. Longitudinal movement of the member K is prevented by. reason of its position in a notch A in the mold base, and lateral displacement thereof is prevented by a web A in said notch which enters a channel K in the member K. Spreading of the channel Wall of the member K is prevented by means of a screw K which j oinsthe two. walls and clears in a slot A when the member K is moved. The left-hand end closing member I is held against lateral displacement rearwardly by means of a key L seated: in a re-- cess in the mold base, the member Khaving a keyway I which is open at 1ts=outer end in o-rderto permit the required longitudinal movement of the member I.

From the foregoing description it will be clear that when the mold is to be adjusted longitudinally thelocking member E is lift-- ed out of engagement with the teeth D on the bar D, and-when it is moved as permitted by the opening D* the member J, mold cap G and left-hand closing: member I movetherewith, the mold cap sliding on the righthand closing member K, and the'left-hand' member I sliding on the mold base A Hence so faras longitudinal adjustment is concernedthese two sliding contacts are the parts to be kept lubricated in order toresist any tendency of the molten: metal to enter between the contacting surfaces and topermit the sliding parts to be easily moved; also, to the extent that the parts slide one upon the other, the floor and roof of the mold slot are lubricated, and the slug is more readily ejected by reason of this 00- casional lubrication; Likewise, When the mold cap is'pressed downward and' returned when adjusting the mold slot for thickness,v the parts to be'lubricated-are theconcealed surfaces of the right-hand end-closing mem ber K and the joint between the inner end of the left-hand member I and the end of the mold cap G. In order that all of these sliding parts may be automatically lubriedge A of' the raised central portion of the mold carrier. The lubricant is poured into any one ofthe openings 0 when in an upperposition as determined by the rotation of the carrier, and flows through the annular groove P and thence through the ducts O and N into the cells M. By reversing the carrier all of the ducts and cells may be thus filled from time to time, but when once filled all of the molds will be kept lubricated until the lubricant is entirely consumed. This is because the lubricant flows around the stud Q, from one to another of the molds as the disk is rotated while in use. But since the mold in use occupies the upper position a greater part of the time of such use, it will receive less lubrication than the other molds, and this is desirable because of the fact that the operative mold becomes heated and the oil would have a tendency to escape in undue quantity if the cell M associated therewith remained filled with lubricant. The entire quantity of oil may be such that it will not flow so far as the operative mold as the carrier rotates during normal operation of the machine in which it is mounted. When in a position of rest and while the slug is being ejected, the operative mold is in vertical position at the right-hand side of the carrier, hence receives no additional supply of lubricant. A valve 0 serves to open. and close the entrance of each duct 0 when supplying lubricant through the opening 0 From the cell M the lubricant enters an openin L through the key L, and as the end-closing member I is moved from time to time a modicum of lubricant enters an opening I through the center thereof and is distributed on the contacting inner edge B of the flange B and thence to the joint between the mold cap G and end member I. Also, a necessary quantity of lubricant escapes around the key L, through the groove A and an opening A to the surface of the end-closing member K and thence into the center channel K thereof, and from this channel it may pass-through an openlng K and lubricate the under side of the mold I laving thus described the construction of my invention, its advantages, and mode pf operation, what I claim as'new and desire to secure by Letters Patent, is:

1. In a rotatable mold-carrier having molds arranged in multiple about the center of rotation thereof for selective use, means for insuring uniform and accurate spacing of said molds from the center of said carrier, said means comprising a base common to all of said molds and forming the center port-ion of said carrier.

2. A rotatable old-carrier, having a central portion with integral edges each of which are equidistant from the center of rotation of said carrier and each of which serves as a casting-floor for one of the molds on said carrier.

3. In a rotatable mold-carrierhaving a central portion the edges of which serve as casting surfaces for molds, means for lubri- I catingsaid casting surfaces intermittently as said carrier is rotated, said means being lubricant ducts leading from said casting surfaces and communicating one with an} other in order that :alc-ommoin supply of lubricant will flow from one to another of said casting surfaces as said carrier is rotated.

4:. A structure as specified in claim 3 including also adjustable mold-elements in engagement with the casting surfaces therein recited, and the specified means whereby said adjustable mold-elementsare supplied with lubricant from said lubricant ducts.

5. In a rotatable mold-carrier having adjustable molds arranged about the center thereof for selective use, means for lubricating the surfaces of said molds from a common supply of lubricant, said means consist ing of a system of communicating lubricant ducts leading from one to. another of said molds and to an adjustable element thereof, and said adjustable element serving to transfer a film of said lubricant to other portions of said mold when'it is adjusted relative thereto.

6. In an adjustable mold, a rotatable disc- 'carrier therefor having an internal flange secured to a central and relatively thicker portion of said carrier, a mold cap having a longitudinal channel occupied by the inner edge of said flange, means for adjustin said channeled cap longitudinally on said ange for determining the length of the casting slot of said mold, means for adjusting said channeled cap transversely for determining the thickness of said casting slot, an end wall for said slot movable longitudinally with said cap in determining the length of said slot, and an opposed end wall movable transversely with said cap in determining the thickness of said slot.

7. In an adjustable'mold mounted on a rotatable carrier, a central portion A for said carrier forming a base for said mold, an

internal flange B secured to opposite ends of said central portion, an end wall I for said mold guided and adjustable longitudinally between said base and said flange, a channeled mold cap G having its front wall recessed to engage said end wall for longitudinal movement therewith and having its channel occupied by said flange for guidance thereon,'an opposed end-wall K having a channel K occupied by a web A in a notch A of said base for transverse guidance thereon and therein'respectively, an engagement K between said opposed end wall and said mold cap permitting said cap to be moved longitudinally relative to said wall, but transversely therewith; a banked adjusting element J movable longitudinally relative to inclined rows of teeth G on the front wall of said channeled cap to establish the transverse adjustinentof said mold oapand said opposed end-wall K, a spring H on said cap for retainingsaid cap and end WVflll in their adjusted position, a banking element D for resisting said spring; and means for adjusting said mold cap G and said first-recited end-Wall I longitudinallly, said nieansembodying a locking element E keyed to; said mold capithrough an ooening B in said flange and adjustable on] said banking eleiient D against the resistance of said spring Signed at Pasadena, Los Angeles County,

California, this 19th day of October, 1926;

. GEORGE E. HARLATT. 

